New Delhi, June 26 -- The number of foreigners arriving in India for medical purposes doubled from 2015 to 2017, Union tourism minister Prahlad Singh Patel told Rajya Sabha on Tuesday. Patel said the number of such tourists was 2,33,918 in 2015 and 4,27,014 in 2016. In 2017, the minister said, the number was 4,95,056. "Realizing the potential to develop and promote Wellness and Medical Tourism as a niche product in the country, the Ministry of Tourism has formulated guidelines for the promotion of Medical Tourism," the Press Information Bureau quoted Patel as saying....